[Sync] Sanity test for UserEvents.

chrome/test/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2646 matching lines @@
       "../browser/sync/test/integration/single_client_directory_sync_test.cc",
       "../browser/sync/test/integration/single_client_extensions_sync_test.cc",
       "../browser/sync/test/integration/single_client_passwords_sync_test.cc",
       "../browser/sync/test/integration/single_client_preferences_sync_test.cc",
       "../browser/sync/test/integration/single_client_printers_sync_test.cc",
       "../browser/sync/test/integration/single_client_search_engines_sync_test.cc",
       "../browser/sync/test/integration/single_client_sessions_sync_test.cc",
       "../browser/sync/test/integration/single_client_supervised_user_settings_sync_test.cc",
       "../browser/sync/test/integration/single_client_themes_sync_test.cc",
       "../browser/sync/test/integration/single_client_typed_urls_sync_test.cc",
+      "../browser/sync/test/integration/single_client_user_events_sync_test.cc",
       "../browser/sync/test/integration/single_client_wallet_sync_test.cc",
       "../browser/sync/test/integration/single_client_wifi_credentials_sync_test.cc",
       "../browser/sync/test/integration/sync_auth_test.cc",
       "../browser/sync/test/integration/sync_errors_test.cc",
       "../browser/sync/test/integration/sync_exponential_backoff_test.cc",
       "../browser/sync/test/integration/two_client_app_list_sync_test.cc",
       "../browser/sync/test/integration/two_client_apps_sync_test.cc",
       "../browser/sync/test/integration/two_client_arc_package_sync_test.cc",
       "../browser/sync/test/integration/two_client_autofill_sync_test.cc",
       "../browser/sync/test/integration/two_client_bookmarks_sync_test.cc",
@@ skipping 2503 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }